• Bellal Joseph, Moutamn Sadoun, Hassan Aziz, Andrew Tang, Julie L Wynne, Viraj Pandit, Narong Kulvatunyou, Terence O'Keeffe, Randall S Friese, and Peter Rhee.
• Division of Trauma, Department of Surgery, University of Arizona, Tucson, Arizona, USA.
• Am Surg. 2014 Jan 1;80(1):43-7.

AbstractAnticoagulation agents are proven risk factors for intracranial hemorrhage (ICH) in traumatic brain injury (TBI). The aim of our study is to describe the epidemiology of prehospital coumadin, aspirin, and Plavix (CAP) patients with ICH and evaluate the use of repeat head computed tomography (CT) in this group. We performed a retrospective study from our trauma registry. All patients with intracranial hemorrhage on initial CT with prehospital CAP therapy were included. Demographics, CT scan findings, number of repeat CT scans, progressive findings, and neurosurgical intervention were abstracted. A comparison between prehospital CAP and no-CAP patients was done using χ(2) and Mann-Whitney U test. A total of 1606 patients with blunt TBI charts were reviewed of whom 508 patients had intracranial bleeding on initial CT scan and 72 were on prehospital CAP therapy. CAP patients were older (P < 0.001), had higher Injury Severity Score and head Abbreviated Injury Scores on admission (P < 0.001), were more likely to present with an abnormal neurologic examination (P = 0.004), and had higher hospital and intensive care unit lengths of stay (P < 0.005). Eighty-four per cent of patients were on antiplatelet therapy and 27 per cent were on warfarin. The CAP patients have a threefold increase in the rate of worsening repeat head CT (26 vs 9%, P < 0.05). Prehospital CAP therapy is high risk for progression of bleeding on repeat head CT. Routine repeat head CT remains an important component in this patient population and can provide useful information.

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